Data and Codes utilized for the study of the Lava Flow of Little Cones, Nevada, USA, using UAV magnetic data. DOI https://doi.org/10.3133/pp1890R.
Description
This repository includes the data utilized in the paper “High -Resolution Magnetic Survey Using an Unoccupied Aerial Vehicle to Constrain Buried Lava Flow Geometry, Volume, and Eruptive History of Little Cones, Crater Flat, Nevada” by Van Alphen and colleagues. DOI: https://doi.org/10.3133/pp1890R. This paper contributes to a special volume by the USGS. Data were collected from October 17 to October 22, 2019, in the Craters Flat area of Nevada, United States. A Unmanned Aerial Vehicle (UAV) and the Sensys R3 MagDrone instrument were employed for data collection purposes. The procedures pertaining to data collection and processing are delineated comprehensively in the paper. The data collected on October 22 primarily pertain to the ‘fencing’ methodology. The folder, “Raw R3 Magdrone Data,” contains unaltered Sensys MagDrone format data captured during flight. No modifications were made to the preserved files. Users must have Sensys software to access this data, which cannot be shared due to licensing restrictions. The dataset is organized into folders by acquisition date, with each file corresponding to a single flight. Filenames include the data collection date and time, the magnetometer model (R3), and its serial number. The folder, “Raw R3 data in ASCII csv format," contains unaltered raw data from the Sensys R3 MagDrone in ASCII csv format, identical to the files in the instrument. It is organized similarly by acquisition dates, with filenames detailing the start date, time, magnetometer model (R3), and serial number. The data format is in the file headers. Magnetic data were collected at 200Hz, and GPS data at 5Hz. The folder “Filtered, reduced and split clean lines” contains magnetic data cleaned of outliers and divided into straight flight lines. Files are organized by day, with each line extracted based on the anticipated magnetic field direction at Craters Flat, Nevada, as described in the referenced paper. The data was filtered at 1Hz using Sensys Magdrone software, with Easting and Northing coordinates for UTM zone 11N included. Each column is described in the file header. Filenames include the flight start date, time, direction, and coordinates. Only lines in the North-South, South-North, East-West, and West-East orientations are kept; lines under 100 meters and ferry lines are excluded. The “Leveled dataset in a uniform spacing grid” contains the final dataset for the inversion process. Processing procedures are detailed in the associated paper. Data is organized on a 10-meter regular spacing grid using GMT’s surface routine with minimum curvature. Additionally, data is formatted in GMT NetCDF. The "Photogrammetry Photos and ancillary data" folder contains all the photos taken during the photogrammetry survey. The photos were taken every second but only every 5th photo was used in the DEM creation. There is also the resultant DEM from the photogrammetry model and the ground control points used to georeference the model.
Files
Steps to reproduce
Data collection and processing are described in the paper. https://doi.org/10.3133/pp1890R.
Institutions
- University of South FloridaFL, Tampa